Non-Abelian Quantum Transport and Thermosqueezing Effects

Autor(es)

Manzano, Gonzalo ^{[1, 2]} ; Parrondo, Juan M. R. ^{[3, 4]} ; Landi, Gabriel T. ^[5]

Afiliação do(s) autor(es)

^[1] UIB, Inst Cross Disciplinary Phys & Complex Syst IFISC, CSIC, Campus Univ Illes Balears, E-07122 Palma De Mallorca - Spain

^[2] Austrian Acad Sci, Lnstitute Quantum Opt & Quantum Informat IQOQI, Boltzmanngasse 3, A-1090 Vienna - Austria

^[3] Univ Complutense Madrid, Dept Estruct La Mat Fis Term & Elect, E-28040 Madrid - Spain

^[4] Univ Complutense Madrid, GISC, E-28040 Madrid - Spain

^[5] Univ Sao Paulo, Inst Fis, BR-05314970 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PRX QUANTUM; v. 3, n. 1 JAN 6 2022.
• Citações Web of Science: 0

Resumo

Modern quantum experiments provide examples of transport with noncommuting quantities, offering a tool to understand the interplay between thermal and quantum effects. Here we set forth a theory for nonAbelian transport in the linear response regime. Our key insight is to use generalized Gibbs ensembles with noncommuting charges as the basic building blocks and strict charge-preserving unitaries in a collisional setup. The linear response framework is then built using a collisional model between two reservoirs. We show that the transport coefficients obey Onsager reciprocity. Moreover, we find that quantum coherence, associated with the noncommutativity, acts so as to reduce the net entropy production, when compared to the case of commuting transport. This therefore provides a clear connection between quantum coherent transport and dissipation. As an example, we study heat and squeezing fluxes in bosonic systems, characterizing a set of thermosqueezing coefficients with potential applications in metrology and heat-to-work conversion in the quantum regime. (AU)

• Processo FAPESP: 17/07973-5 - Termodinâmica e tecnologias de informação utilizando sistemas quânticos de variáveis contínuas
• Beneficiário: Gabriel Teixeira Landi
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/12813-0 - Termodinâmica quântica de sistemas bosônicos
• Beneficiário: Gabriel Teixeira Landi
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 17/50304-7 - Entropy production in non-equilibrium quantum processes: from foundations to quantum technologies
• Beneficiário: Gabriel Teixeira Landi
• Modalidade de apoio: Auxílio à Pesquisa - Regular